Grinding tools



FIG. 1 is a perspective view of grinding tools showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is an enlarged top view thereof;

FIG. 7 is an enlarged bottom view thereof;

FIG. 8 is a partially enlarged view of FIG. 1 ; and,

FIG. 9 is another partially enlarged view of FIG. 1 .

The broken lines shown on the drawings depict portions of the grindingtools that form no part of the claimed design.

CLAIM The ornamental design for grinding tools, as shown and described.